Terahertz radiation generation driven by the frequency chirped laser pulse in magneto-active plasma

Alka Mehta; Niti Kant

doi:10.1117/12.2505928

1 March 2019 Terahertz radiation generation driven by the frequency chirped laser pulse in magneto-active plasma

Alka Mehta, Niti Kant

Proceedings Volume 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII; 109170R (2019) https://doi.org/10.1117/12.2505928
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

This mathematical model deals with the nonlinear response of a magneto-active plasma to the interaction of frequency chirped laser pulses. The beating lasers produce a nonlinear ponderomotive force due to their oscillatory motion. This force drives a nonlinear current, which is responsible for the THz-wave generation at beat frequency. The influence of the external magnetic field on the optimization process of THz field amplitude is investigated numerically. A linear frequency chirp increases the duration of nonlinear interaction of laser pulse with plasma electrons and hence, enforces the resonance for longer duration. The presence of magnetic field further improves the resonance condition. Our numerical simulations reveal that there is a significant enhancement in the THz field strength for optimized value of chirp parameter and magnetic field.

Citation Download Citation

Alka Mehta and Niti Kant "Terahertz radiation generation driven by the frequency chirped laser pulse in magneto-active plasma", Proc. SPIE 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII, 109170R (1 March 2019); https://doi.org/10.1117/12.2505928

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available